<template>
  <div class="login_container">
    <div class="login_box">
      <div class="avatar_box">
        <img src="../assets/logo.png" alt="" />
      </div>
      <!-- 登录表单 -->
      <el-form
        label-width="0px"
        class="login_form"
        :model="user"
        :rules="useRules"
        ref="login_form_ref"
      >
        <!-- 用户名 -->
        <el-form-item prop="username">
          <el-input
            prefix-icon="el-icon-user-solid"
            placeholder="请输入用户名"
            v-model="user.username"
          ></el-input>
        </el-form-item>
        <!-- 密码 -->
        <el-form-item prop="password">
          <el-input
            prefix-icon="el-icon-lock"
            placeholder="请输入密码"
            v-model="user.password"
            show-password
          ></el-input>
        </el-form-item>
        <!-- 按钮 -->
        <el-form-item class="btns">
          <el-button @click="login()" type="primary">登录</el-button>
          <el-button @click="resetLoginForm()" type="info">重置</el-button>
          <!-- <el-button @click="register()" type="primary" >注册</el-button> -->
        </el-form-item>
      </el-form>
    </div>
  </div>
</template>

<script>
export default {
  data() {
    return {
      //登录表单的绑定数据
      user: {
        // username: "Dendi",
        username: "admin",
        password: "123456",
      },
      //rule规则
      useRules: {
        username: [
          //required:不为空
          { required: true, message: "请输入用户名", trigger: "blur" },
          { min: 3, max: 5, message: "长度在 3-5 个字符", trigger: "blur" },
        ],
        password: [
          { required: true, message: "请输入密码", trigger: "blur" },
          { min: 6, max: 15, message: "长度在 6-15 个字符", trigger: "blur" },
        ],
      },
    };
  },
  methods: {
    resetLoginForm() {
      console.log(this);
      this.$refs.login_form_ref.resetFields();
    },
    login() {
      this.$refs.login_form_ref.validate(async (valid) => {
        if (!valid) return;
        const { data: res } = await this.$http.post("login", this.user);
        if (res.meta.status !== 200) return this.$message.error("登录失败");
        this.$message.success("登录成功");
        //1. 将登录成功的token,保存到客户端 sessionStorage中
        //  1.1 项目的其他Api接口,必须在登录之后才能访问
        //  1.2 token只应在当前打开期间生效,所以将token保存在sessionStorage中
        // console.log(res);
        window.sessionStorage.setItem("token", res.data.token);
        this.$router.push("/home");
        //2. 通过编程式导航跳转到后台主页 路由地址 /home
      });
    },
  },
};
</script>
<style lang="less" scoped>
.login_container {
  background-color: #2b4b6b;
  height: 100%;
}
.login_box {
  width: 450px;
  height: 300px;
  background-color: #fff;
  border-radius: 3px; //边框
  position: absolute;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
  .avatar_box {
    height: 130px;
    width: 130px;
    border: 1px solid #eee;
    border-radius: 50%; //圆角
    padding: 10px;
    box-shadow: 0 0 10px #ddd;
    position: absolute;
    left: 50%;
    background-color: #fff;
    transform: translate(-50%, -50%);
    img {
      width: 100%;
      height: 100%;
      border-radius: 50%;
      background-color: #eee;
    }
  }
}
.btns {
  display: flex;
  justify-content: flex-end;
}
.login_form {
  position: absolute;
  bottom: 0px;
  width: 450px;
  padding: 0 20px;
  box-sizing: border-box;
}
</style>
